Induced nuclear reactions: processes – systems – and elements – Fuel component structure – Having particular end closure or seal
Patent
1990-12-14
1991-12-03
Hunt, Brooks H.
Induced nuclear reactions: processes, systems, and elements
Fuel component structure
Having particular end closure or seal
376440, 376452, G21C 310
Patent
active
050698656
ABSTRACT:
A method of forming a gripper cavity in a nuclear fuel rod end plug includes the basic steps of providing an end plug blank having an internal bore of substantially uniform diameter that opens at an annular outer rim on the end plug blank, cold forming the end plug blank to produce an intermediate end plug in which the annular outer rim is transformed into a conical outer rim having a rounded internal surface that defines an inlet opening to the internal bore of a diameter less than that of the internal bore, and removing an external layer of material from the intermediate end plug and an internal layer of material from the rounded internal surface of the conical outer rim to produce a finished end plug having an internal gripper cavity composed of the internal bore and a cylindrical internal surface defining the inlet opening to the internal bore and being of smaller diameter than the internal bore.
REFERENCES:
patent: 1996181 (1935-04-01), Wait
patent: 2408596 (1946-10-01), Bednar et al.
patent: 2686489 (1954-08-01), Kaestner
patent: 4716018 (1987-12-01), Boatwright et al.
Boatwright David A.
Yeo Denis
Chelliah Meena
Hunt Brooks H.
Westinghouse Electric Corp.
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